Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5733830 | Beta-alumina electrocast refractories | Shigeo Endo, Kimio Hirata | 1998-03-31 |
| 5679612 | High-zirconia fused refractories | Shigeo Endo, Kimio Hirata, Shinji Tsuchiya | 1997-10-21 |